<?php
require_once "vendor/autoload.php";
$username = 'root';
$password = '123456';
$dsn      = "mysql:dbname=study;host=localhost";
$storage = new OAuth2\Storage\Pdo(array('dsn' => $dsn, 'username' => $username, 'password' => $password));
print_r($storage);
echo "test";